As I have not received a reply from your side, I am posting the answer to your question.
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Both the words " submitted" and "associated " have the same meaning.
A knee has three compartments namely, patellofemoral compartment which is the joint between the lower part of the thigh bone and the knee cap, medial compartment which is the inner of the joint between the thigh bone and leg bone and lateral compartment which is the outer half of the joint between thigh bone and the leg bone.
Both your knees have developed degenerative changes in all the three compartments named above.
Several changes occur in knee joint degeneration, including loss of cartilage which is the protective layer between the bone forming the joint,decrease in quantity and quality of the lubricating fluid of the joint, changes in alignment of the joint due to loss of cartilage which can be and is often uneven between the outer and inner sides of the joint between thigh and leg bone.
These changes cause the joint to become painful and stiff often making walking difficult and painful.
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